Battery Compatibility:

• 18650 battery sizes vary by brand and model. Even a few millimeters can make a battery incompatible with your flashlight. • Please verify the correct length and type (Flat Top or Button Top) before purchasing. Thank you for your understanding.

The Fenix ARB-L18-4000 High-Capacity 18650 Battery boasts a top-of-the-line 4000mAh rating, ensuring top-notch performance and dependability. With built-in safeguards such as short-circuit prevention and multiple protective layers, along with a button-top design perfect for various Fenix LED flashlights, this rechargeable battery series is the ideal option for superior lighting capabilities.

Note: This item is packaged and priced as one battery. 

Specifications:

• Fenix ARB-L18-4000mAh Rechargeable 18650 Battery
• Button-Top Design
• Protection circuit built in the anode with a steel hat by riveting process
• Steel shell eliminates the risk of short circuit caused by collision and impact
• Pressure Relief Vent: Expels waste gas generated by internal short circuit
• Expelling waste gas prevents a cell from inflating or exploding
• Three Sets of Over-Heat Protection: Over-charge protection and over-discharge protection Short-circuit protection Overheating protection
• 500 Charge Cycles: A properly maintained ARB-L18 battery is designed to retain up to 75% of its original capacity at 500 full charge and discharge cycles. 

Battery Measurement:

• Size: Length: 2.72" (69.2mm)
• Diameter: 0.74" (18.75mm)
  

Included: